Severity levels describe one's co-morbid conditions load, not their autism. There is only one autism. One either has it or they do not. (Grading one's co-morbid conditions is an important step for receiving supporting services, however.)
This is gold. I gotta say I wasn't aware of this and I think Autistamatic was trying to explain to me this very fact. But now I get it, and I get where my bigger mistake actually was.
Thank you so much for writing this!